Answer
$7y^{3}+13b-11$
Work Step by Step
We are given the expression $(9y^{3}-a+7b-3)+(-2y^{3}+a+6b-8)$. We can combine like terms to simplify.
$(9y^{3}-2y^{3})+(-a+a)+(7b+6b)+(-3-8)=7y^{3}+13b-11$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Section 5.3 - Polynomials and Polynomial Functions - Exercise Set - Page 279: 66
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